Bundle Activator Wizard: Services Page

This page of the wizard gathers information related to the services that the bundle will import from the OSGi framework, and services that the bundle will export to the OSGi framework.

Services Pages

Imported Services: Services that will be imported by the bundle are listed here. Click the Add... button to add a new service, click the Edit... button to edit an existing selected service, and click the Remove button to remove one or more selected services.
- Filtered: Check this column if you wish to provide an LDAP filter that will be used at runtime to select a service with particular registered properties.
- Optional: Check this column if the imported service should be considered optional. Optional services are more complicated to work with and are rarely needed.
Exported Services: Services that will be exported by the bundle are listed here. Click the Add... button to add a new service, click the Edit... button to edit an existing selected service, and click the Remove button to remove one or more selected services. Optionally click the Class... button to choose an Implementation Class for the service.
- Field: Check this column if you wish the service to be stored in an instance field of the bundle activator. Under most circustances this is not necessary, although it can be useful for performing custom behavior when the service is unregistered.
- Properties: Check this column the service should be registered with the OSGi framework with properties. Properties are a useful way of distinguishing one implementation of a service from another.
- Proxy: Check this column if the exported service should be registered with the OSGi framework as a proxy. Proxy services are useful when you wish to delay the creation of the service until it is used for the first time. Other uses of proxy services includes wrapping pre- and post- invocation behavior around service APIs.
Edit Type Scope: When the Add... button is clicked only interfaces visible to the project are available by default. This ensures that the code generated by the wizard will compile without error. The Edit Type Scope... button allows you to adjust the available types to include classes as well as interfaces, and types visible to the entire workspace.

Type Scope Preferences

Warning Describing imported and exported services using classes is not recommended.

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